Review on Welding Magnetic Working Equipment Workshop by David Estevez

I use them as an aid to installing shelves etc. I have found that they don't have much holding power, they hold but if you move them to the side they slip off very easily. They are a little bulky, I should have gotten a shorter figure. I don't weld but if I did I thought the plastic would melt, there is a plastic sleeve protecting the magnets and I think it would catch fire if used there. maybe i'm wrong.